gboolean add_supports_type ( GAppInfo* appinfo, const char* content_type, GError** error )
Adds a content type to the application information to indicate the application is capable of opening files with the given content type.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string.
The return location for an error.
The argument can be
The argument will be set to
NULLby the function if there are no errors.
In case of error, the argument will be set and the caller will take ownership of the data, and be responsible for freeing it.